228727551 has 16 divisors (see below), whose sum is σ = 329011200. Its totient is φ = 140506080.

The previous prime is 228727549. The next prime is 228727559. The reversal of 228727551 is 155727822.

It is not a de Polignac number, because 228727551 - 2¹ = 228727549 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228727559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18466 + ... + 28256.

It is an arithmetic number, because the mean of its divisors is an integer number (20563200).

Almost surely, 2^228727551 is an apocalyptic number.

228727551 is a deficient number, since it is larger than the sum of its proper divisors (100283649).

228727551 is a wasteful number, since it uses less digits than its factorization.

228727551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10406.

The product of its digits is 78400, while the sum is 39.

The square root of 228727551 is about 15123.7413029977. The cubic root of 228727551 is about 611.5605933199.

The spelling of 228727551 in words is "two hundred twenty-eight million, seven hundred twenty-seven thousand, five hundred fifty-one".